BREAKING_CHANGE(core): remove legacy forwarding module in favor of route-based system

- Removed the forwarding namespace export from main index
- Removed TForwardingType and all forwarding handlers
- Consolidated route helper functions into route-helpers.ts
- All functionality is now available through the route-based system
- Users must migrate from forwarding.* imports to direct route helper imports

ts/proxies/smart-proxy/utils/index.ts

@@ -14,23 +14,12 @@ export * from './route-validators.js';
 // Export route utilities for route operations
 export * from './route-utils.js';
 
-// Export route patterns with renamed exports to avoid conflicts
-import {
-  createWebSocketRoute as createWebSocketPatternRoute,
-  createLoadBalancerRoute as createLoadBalancerPatternRoute,
-  createApiGatewayRoute,
-  addRateLimiting,
-  addBasicAuth,
-  addJwtAuth
-} from './route-patterns.js';
-
+// Export additional functions from route-helpers that weren't already exported
 export {
-  createWebSocketPatternRoute,
-  createLoadBalancerPatternRoute,
   createApiGatewayRoute,
   addRateLimiting,
   addBasicAuth,
   addJwtAuth
-};
+} from './route-helpers.js';
 
 // Migration utilities have been removed as they are no longer needed